<template>
    <div class="todo-header">
        <input
            type="text"
            placeholder="请输入你的任务名称，按回车键确认"
            v-model="title"
            @keyup.enter="add"
        />
    </div>
</template>

<script>
import { nanoid } from "nanoid";
export default {
    name: "TdHeader",
    data() {
        return {
            title: "",
        };
    },
    methods: {
        add() {
            //校验数据
            if (!this.title.trim()) return alert("输入不能为空");
            //将用户的输入包装成为一个todo对象
            const todoObj = {
                id: nanoid(),
                title: this.title,
                done: false,
            };
            //通知App组件添加一个todo对象
            // this.addTodo(todoObj);
            this.$emit("addTodo", todoObj);
            this.title = "";
        },
    },
    //props: ["addTodo"],
};
</script>

<style scoped>
/*header*/
.todo-header input {
    width: 560px;
    height: 28px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 4px 7px;
}

.todo-header input:focus {
    outline: none;
    border-color: rgba(82, 168, 236, 0.8);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
        0 0 8px rgba(82, 168, 236, 0.6);
}
</style>